But the customer complained about the fact that it did not work in Windows 7.
Only Firefox worked there, IE and chrome did not work 100%.

What happens in Chrome and IE is:
Typing in @ makes the @-character dissapear. But if we keep typing in "robert" for instance, the lookup works, kind of. It looks up all users that starts with "obert", so the R is omitted.
So by typing in "rrobert" it actually works, but still, you do not see the @ character.

I then tested this myself on the customer Connections site on a windows 7 virtual pc I have.
I could confirm that I had the same experience as the customer had.

I then created a PMR on the issue.

The PMR then asked me about testing this on the Greenhouse Connections site.So I did, and I could see the exact same issues!!

This got me thinking. What´s different between my mac and a windows 7 computer? There has to be something locally on my computer that is doing it!

I then landed on the fact that the keyboard-layout on the windows computer is in Norwegian.

So I switched from "NO" keyboard layout to "US" keyboard layout, and it worked!! All browsers work. Both on Greenhouse and the Customers site.